Resposta :
Fatores x2 + 14x + 49 e x2 – 14x + 49.
Resposta:
x2 + 14x + 49 = (x + 7)2
x2 – 14x + 49
x2 – 14x + 49 = (x – 7)2
(x + 7)2·(x – 7)2
Resposta:
x2 + 14x + 49 = (x + 7)2
x2 – 14x + 49
x2 – 14x + 49 = (x – 7)2
(x + 7)2·(x – 7)2